Hardware requirements:

Software Requirements

ArcGIS Desktop

ArcView®, ArcEditor™, or
ArcInfo®9.3 or higher is required to use the ArcPad Data Manager
for ArcGIS Desktop.

*ArcEditor or ArcInfo license is
required for geodatabase data check-in/out.

*At the time of the ArcPad
installation, if you have ArcGIS 9.3, the ArcPad 8.0 Data
Manager will automatically be installed. If you have ArcGIS
10, the ArcPad 10.0 Data Manager will automatically be
installed.

*At the time of the ArcPad
installation, if you have ArcGIS 9.3, the ArcGIS Server ArcPad 8
Extension will automatically be installed. If you have ArcGIS 10,
the ArcGIS Server ArcPad 10 Extension will automatically be
installed.

Desktop Synchronization Software (if you intend to install ArcPad 10.0 on a Windows Mobile computer and/or using ArcPad Studio on a desktop computer)